mirror of
https://github.com/mpv-player/mpv
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51ba40dcd6
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@22918 b3059339-0415-0410-9bf9-f77b7e298cf2
45 lines
849 B
C
45 lines
849 B
C
/*
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This file is based on:
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$XFree86: xc/programs/Xserver/hw/xfree86/etc/scanpci.c,v 3.34.2.17 1998/11/10 11:55:40 dawes Exp $
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Modified for readability by Nick Kurshev
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*/
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#include <errno.h>
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#include <sys/param.h>
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#include <sys/file.h>
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#include <machine/sysarch.h>
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#ifndef GCCUSESGAS
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#define GCCUSESGAS
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#endif
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static int io_fd;
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static __inline__ int enable_os_io(void)
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{
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io_fd = -1 ;
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#if !defined(USE_I386_IOPL)
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if ((io_fd = open("/dev/io", O_RDWR, 0)) < 0) {
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perror("/dev/io");
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return(errno);
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}
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#else
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if (i386_iopl(1) < 0) {
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perror("i386_iopl");
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return(errno);
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}
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#endif /* USE_I386_IOPL */
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return(0);
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}
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static __inline__ int disable_os_io(void)
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{
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#if !defined(USE_I386_IOPL)
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close(io_fd);
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#else
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if (i386_iopl(0) < 0) {
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perror("i386_iopl");
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return(errno);
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}
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#endif /* NetBSD1_1 */
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return(0);
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}
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